Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 3-5

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 5-17

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 18-22

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 25-32

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 35-36

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 36-37

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 37-39

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 39-40

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 40-43

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 44-47

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 48-49

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 49-51

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 52-58

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 59-64

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 65-71

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 71-75

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 76

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 77-79

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 80-81

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 81-82

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 82-84

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 84-86

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 86-88

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 89-94

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 95-100

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 101-106

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 107-110

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 110

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 111

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 113-114

Published in Bulletin of the British Ornithologists' Club, in 1983, in volume 103, pages 123-128

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 128-133

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 135-138

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 139-140

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 140-144

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 144-145

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 145-146

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, issue 1, pages 22-25

Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, issue 4, pages 133-135